Inventor

HALL MATTHEW JAMES

DK4 patents

⚠️ This page may combine multiple inventors who share the name “HALL MATTHEW JAMES”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

IPS GROUP INC

2 patents

US9685027B2Jun 20, 2017

Parking meter

IPS GROUP INC35 citations97

US10089814B2Oct 2, 2018

Parking meter

IPS GROUP INC22 citations93

KING DAVID

1 patent

US8590687B2Nov 26, 2013

Parking meter

KING DAVID85 citations97

NHAS NAT HEARING AIDS SYSTEMS

1 patent

US6493454B1Dec 10, 2002

Hearing aid

NHAS NAT HEARING AIDS SYSTEMS103 citations89